Steam-generator



2 Sheets-Sheet l.

, T. P. FRANKE'. Steam Generator.

No. 232,255. Patented Sept. 14,1880.

INYENTOR ATTORNEYS:

2 Sheets--Sheet 2.

T. P. PRANKB. Steam Generator.

No. 232,255 Patented Sept. 14,1880.

WI' I'N ESS INVBNTORr I XI 4722 BY MM ATTORNEYS.-

UNiTED STATES PATENT OFFICE.

THEODORE P. FRANKE, OF BUFFALO, NEW YORK.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 232,255, dated September 14, 1880.

Application filed January :8, 1880.

To all whom it may concern:

Be it known that I, Tunononn P. FRANKE, of Buffalo, in the county of Erie and State of New York, have invented a new Improvement in Steam-Generators, of which the following is a specification.

Figure 1 is a perspective view of the device. Fig. 2 is a sectional front elevation of the device on line 00 m, Fig. 3. Fig. 3 is a sectional side elevation of the device 011 line 3 3 Fig. 2. Fig. 4 is a partial front elevation of the device. Fig. 5 is a transverse sectional plan view 011 line 22, Fig. 3.

Similar letters of reference indicate corresponding parts.

This invention relates to that class of steam generators or heaters in which a multiplicity of water-tubes connect the drums or cylinders of the boiler.

This invention is an improvement upon the steam generators for which a patent, No. 203,721, was granted to me May 14, 1878, and consists of a new combination or arrangement of cylinders and tubesin order to increase the efficiency of the generator or heater.

In the drawings, A A represent two horizontal cylinders that serve as mud-drums, set parallel with each other and some distance apart, and connecting directly at their rear ends with a like mud-drum, B, that is set at right angles to them.

O O are two steam and water cylinders, set close together parallel with the drums A A, and above them on either side of an imaginary line extended upward from a point midway between the said drums. These mud-drums A A and cylinders G O are connected with each other by one or more rows of verticalinclined tubes, E E, and each drum A with acylinder, U, and their connectingtubes E, is termed a side section of the generator or heater.

D is a cylinder, similar to the cylinders (J 0, set horizontally and above the drum B, and connects directly with the rear ends of the cylinders (J O, and at right angles to them. This cylinder D and the drum B are connected with each other by one or more rows of perpendicular tubes, F, as shown, and thiscombination of cylinder D, drum B, and tubes F is termed a transverse section.

The tubes Gr G, extending at an angle from the lower transverse drum, B, to the upper front ends of the longitudinal horizontal cylinders O G, with which they are connected by the bent tube H, being located, as shown, heneath the cylinders O O and between the side sections of the generator, serve to prevent the flame in the fire-box from impinging upon the said cylinders O G and to deflect the flame upon and around the tubes E of the side sections. In place of these several tubes G G, one larger tube or pipe may be used to produce the same desirable effect.

The steam-dome K is set above the cylinder D and parallel with it, andis connected therewith by the tubes L L, and from the tops of the cylinders C O the tubes M M connect with the steam-dome K, to conduct the steam from the said cylinders O O to the dome K.

The manner of connecting the tubes and cylinders in this steam generator or heater is similar to that set forth in Patent No.211,90l, granted to me February 4, 1879, wherein is described the construction of boiler-tubes and the manner of connecting them with the boiler cylinders and drums.

The transverse drum and cylinder B D are preferably connected with the drums and cylinders A G by close wrought-iron pipe nipples, and other transverse sections, similar to the one herein shown, may be connected to the rear of this one and with each other, to any desired number.

The grate-bars N are placed on a level with the bottoms of the longitudinal drums A A and between them.

All the cylinders and drums are to be preferably furnished with separate risers for each and every tube, and the sockets in the cylin ders or drums for the tubes are intended to be tapped for screw-threads.

The drawings represent a boiler of about one hundred and fifty horse-power capacity, and I propose to construct all large power boilers after the same design; but in theconstruction of small boilers for power or heating purposes I dispense with the steam-dome herein shown, and carry the upper cylinder of the transverse section above the upper cylinders of the side sections, and let it serve as the steamdome.

In the construction of small boilers or steamgenerators I may also leave out the tube or tubes that extend, as shown, at an angle from the lower drum of the transverse section to he front ends of the upper cylinders of the side sections, for in small boilers such deflecting-tubes will not be required to direct the flames to the side sections; and 1 may adopt other construction without departing from the principle of my invention; bntin all cases the relative positions of the side and transverse sections will be the same, though the number of connecting-tubes will be determined bythe size of the generator and the purposes for which it is designed.

In boilers constructed in this manner the heat and flame from the fire have access to every part of it, and the circulation of water through it is constant and regular.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is

In a steam-generator, the combination, with the side sections composed of mud-drums A, col'lnecting-tubes E, and steam-cylinders O, and transverse section composed of mud-drum B, connecting-tubes F, and steam-cylinders D, of the tubes H G M L and steam-dome K, sub- 25 stantially as herein shown, and for the purpose described.

"THEODORE PAUL FRANKE.

Witnesses:

ANTH. J. SOHILLO, EMIL G. GEORGES. 

